/* ============================================================
   THE PUZZLE POST — Puzzles & Logic Gazette
   Newsprint system: warm off-white paper, black ink, red spot colour,
   blackletter nameplate, condensed headlines, serif body. No framework.
   ============================================================ */

:root {
  --paper:   #f4f1e8;
  --paper-2: #ece7d8;
  --paper-3: #e3ddca;
  --ink:     #16150f;
  --ink-soft:#4c483d;
  --red:     #c8202e;
  --red-dk:  #a51824;
  --hair:    #c7c0ac;

  --f-name: "UnifrakturCook", "Times New Roman", serif;
  --f-head: "Oswald", "Arial Narrow", system-ui, sans-serif;
  --f-body: "PT Serif", Georgia, "Times New Roman", serif;

  --page-max: 74rem;
}

* { box-sizing: border-box; }

html {
  background-color: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--f-body);
  font-weight: 400;
  line-height: 1.68;
  color: var(--ink);
  background-color: var(--paper);
}

::selection { background: var(--red); color: var(--paper); }

a { color: inherit; text-decoration: none; }
svg { display: block; }

h1, h2, h3, h4 { font-family: var(--f-head); font-weight: 600; color: var(--ink); margin: 0; line-height: 1.08; }
p { margin: 0; }

.mt-3 { margin-top: 1.5rem; }
.mx-auto { margin-inline: auto; }
.fine { font-size: 0.85rem; color: var(--ink-soft); }

/* -------- Page column -------- */
.paper { width: 100%; max-width: var(--page-max); margin-inline: auto; padding-inline: 1.4rem; }
@media (min-width: 768px) { .paper { padding-inline: 2.2rem; } }
.paper.narrow { max-width: 50rem; }

/* -------- Type -------- */
.headline { font-family: var(--f-head); font-weight: 600; letter-spacing: -0.01em; line-height: 1.05; }
.headline-xl { font-size: clamp(2.6rem, 7vw, 5rem); font-weight: 700; text-transform: none; }
.headline-lg { font-size: clamp(2rem, 4.5vw, 3.2rem); font-weight: 700; }
.red { color: var(--red); }

.kicker {
  display: inline-block; font-family: var(--f-head); font-size: 0.76rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.2em; color: var(--red);
  padding-bottom: 0.5rem; margin-bottom: 1rem; border-bottom: 2px solid var(--red);
}
.deck { font-family: var(--f-body); font-size: 1.15rem; line-height: 1.65; color: var(--ink-soft); max-width: 42rem; }
.standfirst { font-family: var(--f-body); font-size: 1.24rem; line-height: 1.6; font-weight: 700; color: var(--ink); max-width: 44rem; }
.byline { font-family: var(--f-head); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-soft); margin-top: 1rem; padding-block: 0.6rem; border-block: 1px solid var(--hair); }

.body-text { font-size: 1.02rem; }
@media (min-width: 768px) { .body-text { text-align: justify; hyphens: auto; } }
.drop {
  font-family: var(--f-head); font-weight: 700; float: left; font-size: 3.3rem; line-height: 0.8;
  padding: 0.3rem 0.5rem 0 0; color: var(--red);
}

/* -------- Buttons -------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font-family: var(--f-head); font-size: 0.82rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.12em;
  padding: 0.75rem 1.6rem; border: 2px solid var(--ink); cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}
.btn-ink { background: var(--ink); color: var(--paper); }
.btn-ink:hover { background: var(--red); border-color: var(--red); }
.btn-line { background: transparent; color: var(--ink); }
.btn-line:hover { background: var(--ink); color: var(--paper); }
.btn-wide { width: 100%; margin-top: 0.4rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 1.8rem; }
.btn-row--center { justify-content: center; }

.more {
  font-family: var(--f-head); font-size: 0.82rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--red); white-space: nowrap;
}
.more:hover { color: var(--ink); }

/* -------- Masthead -------- */
.masthead { background: var(--paper); border-bottom: 3px solid var(--ink); }
.mast-top {
  display: flex; justify-content: space-between; align-items: center; gap: 0.5rem;
  font-family: var(--f-head); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--ink-soft); padding-top: 0.9rem;
}
.mast-top-mid { font-style: italic; font-family: var(--f-body); letter-spacing: 0; text-transform: none; font-size: 0.82rem; }
.mast-rule { height: 1px; background: var(--ink); margin-block: 0.5rem; }
.mast-rule--thick { height: 3px; }
.nameplate {
  display: block; text-align: center; font-family: var(--f-name); font-weight: 700;
  font-size: clamp(2.4rem, 8vw, 5.2rem); line-height: 1; color: var(--ink);
  padding-block: 0.4rem; letter-spacing: 0.01em;
}
.mast-sub {
  display: flex; justify-content: center; align-items: center; gap: 1rem;
  font-family: var(--f-head); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.2em; color: var(--ink-soft);
}
.mast-sub .star { color: var(--red); }

.mast-nav-bar { display: flex; align-items: center; justify-content: center; position: relative; padding-block: 0.6rem; }
.mast-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.8rem; }
.mast-nav a {
  font-family: var(--f-head); font-size: 0.86rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--ink); transition: color 0.18s ease;
}
.mast-nav a:hover { color: var(--red); }
.nav-toggle-input { display: none; }
.nav-burger { display: none; position: absolute; right: 0; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; border: 2px solid var(--ink); }
.nav-burger span { width: 20px; height: 2px; background: var(--ink); display: block; }
.mobile-menu { display: none; flex-direction: column; gap: 0.2rem; padding: 0.4rem 0 1rem; }
.mobile-menu a { font-family: var(--f-head); text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.9rem; padding: 0.6rem 0.2rem; border-bottom: 1px solid var(--hair); }
.nav-toggle-input:checked ~ .mobile-menu { display: flex; }
@media (max-width: 720px) {
  .mast-nav { display: none; }
  .nav-burger { display: inline-flex; }
  .mast-nav-bar { justify-content: flex-start; }
}

/* -------- Lead story -------- */
.lead-story { padding-block: 2.6rem 3.5rem; border-bottom: 3px double var(--ink); }
.lead-grid { display: grid; gap: 2.5rem; }
@media (min-width: 900px) { .lead-grid { grid-template-columns: 1.7fr 1fr; gap: 3rem; } }
.lead-main h1 { margin-block: 0.3rem 1.2rem; }
.lead-columns { margin-top: 1.4rem; }
@media (min-width: 620px) { .lead-columns { columns: 2; column-gap: 2.2rem; } }
.lead-columns p { margin-bottom: 1rem; font-size: 1.0rem; }
@media (min-width: 620px) { .lead-columns p { text-align: justify; hyphens: auto; break-inside: avoid; } }

.lead-side { border-top: 1px solid var(--hair); padding-top: 1.5rem; }
@media (min-width: 900px) { .lead-side { border-top: 0; padding-top: 0; border-left: 1px solid var(--ink); padding-left: 2rem; } }
.grid-figure { margin: 0 0 1.8rem; }
.grid-figure svg { width: 100%; max-width: 18rem; margin-inline: auto; height: auto; }
.grid-figure figcaption { font-family: var(--f-body); font-style: italic; font-size: 0.86rem; color: var(--ink-soft); text-align: center; margin-top: 0.7rem; padding-top: 0.6rem; border-top: 1px solid var(--hair); }

.at-a-glance { border: 2px solid var(--ink); padding: 1.2rem 1.3rem; }
.at-a-glance h3 { font-family: var(--f-head); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.18em; text-align: center; padding-bottom: 0.7rem; margin-bottom: 0.7rem; border-bottom: 1px solid var(--ink); }
.glance-row { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding: 0.45rem 0; border-bottom: 1px dotted var(--hair); }
.glance-row:last-child { border-bottom: 0; }
.glance-val { font-family: var(--f-head); font-weight: 700; font-size: 1.3rem; color: var(--red); }
.glance-cap { font-family: var(--f-head); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-soft); }

/* -------- Sections -------- */
.section { padding-block: 3.5rem; }
@media (min-width: 768px) { .section { padding-block: 4.5rem; } }
.section--tint { background: var(--paper-2); border-block: 1px solid var(--ink); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 2rem; border-bottom: 3px double var(--ink); padding-bottom: 0.6rem; }
.section-title { font-family: var(--f-head); font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; font-size: clamp(1.4rem, 3vw, 2rem); }

/* -------- Puzzle grid -------- */
.puzzle-grid { display: grid; gap: 0; grid-template-columns: 1fr; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
@media (min-width: 620px) { .puzzle-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .puzzle-grid { grid-template-columns: repeat(3, 1fr); } }
.puzzle-card { display: block; padding: 1.6rem 1.5rem; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); transition: background 0.18s ease; }
.puzzle-card:hover { background: var(--paper-2); }
.puzzle-glyph { font-size: 1.9rem; line-height: 1; color: var(--ink); }
.puzzle-family { display: block; font-family: var(--f-head); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.16em; color: var(--red); margin: 0.7rem 0 0.3rem; }
.puzzle-card h3 { font-family: var(--f-head); font-weight: 600; font-size: 1.35rem; margin-bottom: 0.4rem; }
.puzzle-card p { font-family: var(--f-body); color: var(--ink-soft); font-size: 0.95rem; }

/* -------- Split -------- */
.split { display: grid; gap: 2.4rem; align-items: start; }
@media (min-width: 840px) { .split { grid-template-columns: 1fr 1fr; gap: 3.5rem; } }
.split .headline { font-size: clamp(1.6rem, 3.2vw, 2.4rem); margin-block: 0.4rem 0.9rem; }

/* -------- Technique list (home) -------- */
.technique-list { list-style: none; counter-reset: t; margin: 0; padding: 0; }
.technique-list li { counter-increment: t; padding: 1.1rem 0 1.1rem 3rem; border-top: 1px solid var(--hair); position: relative; }
.technique-list li:last-child { border-bottom: 1px solid var(--hair); }
.technique-list li::before { content: counter(t); position: absolute; left: 0; top: 1.1rem; font-family: var(--f-head); font-weight: 700; font-size: 1.4rem; color: var(--red); }
.technique-title { display: block; font-family: var(--f-head); font-weight: 600; font-size: 1.2rem; }
.technique-intro { display: block; font-family: var(--f-body); color: var(--ink-soft); font-size: 0.96rem; }

/* -------- Archive grid (home) -------- */
.archive-grid { display: grid; gap: 0; grid-template-columns: 1fr; }
@media (min-width: 820px) { .archive-grid { grid-template-columns: repeat(3, 1fr); } }
.archive-item { display: block; padding: 1.6rem 1.5rem 1.6rem 0; border-bottom: 1px solid var(--hair); }
@media (min-width: 820px) { .archive-item { border-bottom: 0; border-right: 1px solid var(--hair); padding-right: 1.5rem; } }
.archive-item:last-child { border-right: 0; }
.archive-period { font-family: var(--f-head); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.18em; color: var(--red); }
.archive-item h3 { font-family: var(--f-head); font-weight: 600; font-size: 1.3rem; margin: 0.5rem 0; }
.archive-item p { font-family: var(--f-body); color: var(--ink-soft); font-size: 0.95rem; }
.archive-item:hover h3 { color: var(--red); }

/* -------- Closing -------- */
.closing { text-align: center; max-width: 44rem; margin-inline: auto; }
.closing h2 { margin-block: 0.5rem 1rem; }

/* -------- Page head -------- */
.page-head { padding-block: 3rem 2.6rem; border-bottom: 3px double var(--ink); }
@media (min-width: 768px) { .page-head { padding-block: 4rem 3rem; } }
.page-head h1 { margin-block: 0.3rem 1.1rem; }

/* -------- Entry (Puzzles / Solving pages) -------- */
.entry-stack { display: grid; gap: 0; }
.entry { display: grid; gap: 2rem; padding-block: 2.8rem; border-top: 1px solid var(--ink); }
.entry:first-child { border-top: 0; padding-top: 0; }
@media (min-width: 820px) { .entry { grid-template-columns: 0.85fr 1.15fr; gap: 3rem; } }
.entry-mark .puzzle-glyph--lg { font-size: 3rem; }
.entry-mark h2 { font-family: var(--f-head); font-weight: 700; font-size: 2rem; margin: 0.4rem 0; }
.entry-one { font-family: var(--f-body); font-style: italic; color: var(--red-dk); font-size: 1.05rem; }
.facts { display: grid; gap: 0; margin: 1.4rem 0; border-top: 1px solid var(--hair); }
.facts div { display: grid; grid-template-columns: 8rem 1fr; gap: 1rem; padding: 0.6rem 0; border-bottom: 1px solid var(--hair); }
.facts dt { font-family: var(--f-head); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--red); padding-top: 0.15rem; }
.facts dd { margin: 0; font-family: var(--f-body); }
.mini-head { font-family: var(--f-head); font-weight: 600; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.8rem; padding-bottom: 0.4rem; border-bottom: 1px solid var(--ink); }

.tick-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.tick-list li { position: relative; padding-left: 1.6rem; font-family: var(--f-body); }
.tick-list li::before { content: "■"; position: absolute; left: 0; color: var(--red); font-size: 0.6rem; top: 0.35rem; }

.step-list { list-style: none; counter-reset: s; margin: 0; padding: 0; display: grid; gap: 0.8rem; }
.step-list li { counter-increment: s; position: relative; padding: 0.7rem 0 0.7rem 2.8rem; border-bottom: 1px solid var(--hair); font-family: var(--f-body); }
.step-list li::before { content: counter(s, decimal-leading-zero); position: absolute; left: 0; top: 0.7rem; font-family: var(--f-head); font-weight: 700; color: var(--red); }

/* -------- History -------- */
.history-stack { display: grid; gap: 0; }
.history-entry { display: grid; gap: 1rem; padding-block: 2.4rem; border-top: 1px solid var(--ink); }
.history-entry:first-child { border-top: 0; padding-top: 0; }
@media (min-width: 720px) { .history-entry { grid-template-columns: 10rem 1fr; gap: 2.4rem; } }
.history-period { font-family: var(--f-head); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.16em; color: var(--red); padding-top: 0.4rem; }
.history-body h2 { font-family: var(--f-head); font-weight: 700; font-size: 1.6rem; margin-bottom: 0.6rem; }

/* -------- Glossary -------- */
.glossary { display: grid; gap: 0; margin: 0; }
.gloss-item { display: grid; gap: 0.3rem 2rem; padding: 1.2rem 0; border-top: 1px solid var(--hair); }
.gloss-item:last-child { border-bottom: 1px solid var(--hair); }
@media (min-width: 720px) { .gloss-item { grid-template-columns: 13rem 1fr; } }
.gloss-item dt { font-family: var(--f-head); font-weight: 600; font-size: 1.2rem; color: var(--ink); }
.gloss-item dd { margin: 0; font-family: var(--f-body); color: var(--ink-soft); }

/* -------- Contact / forms -------- */
.contact-list { display: grid; gap: 0; margin: 1.4rem 0 0; border-top: 1px solid var(--ink); }
.contact-list div { padding: 0.9rem 0; border-bottom: 1px solid var(--hair); }
.contact-list dt { font-family: var(--f-head); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--red); }
.contact-list dd { margin: 0.3rem 0 0; font-family: var(--f-body); font-size: 1.05rem; }
.form-box { padding: 1.8rem; border: 2px solid var(--ink); background: var(--paper); }
.field { display: grid; margin-bottom: 1.1rem; }
.field label { font-family: var(--f-head); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-soft); margin-bottom: 0.4rem; }
.req { color: var(--red); margin-left: 3px; }
.input, .textarea {
  width: 100%; font-family: var(--f-body); font-size: 1rem; color: var(--ink);
  background: var(--paper-2); border: 1px solid var(--ink); padding: 0.7rem 0.9rem; outline: none;
  transition: border-color 0.18s ease;
}
.textarea { resize: vertical; }
.input:focus, .textarea:focus { border-color: var(--red); }
.form-done { display: flex; gap: 1.2rem; align-items: flex-start; padding: 1.8rem; border: 2px solid var(--red); background: var(--paper-2); }
.form-done[hidden] { display: none; }
.done-mark { font-family: var(--f-head); font-weight: 700; font-size: 1.8rem; color: var(--red); line-height: 1; }

/* -------- FAQ -------- */
.faq-group { margin-bottom: 2.6rem; }
.faq-item { border-top: 1px solid var(--hair); }
.faq-group .faq-item:last-child { border-bottom: 1px solid var(--hair); }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 1.1rem 0; display: flex; justify-content: space-between; gap: 1.5rem;
  font-family: var(--f-head); font-weight: 600; font-size: 1.15rem; color: var(--ink);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--red); font-family: var(--f-head); font-size: 1.5rem; line-height: 1; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding-bottom: 1.2rem; font-family: var(--f-body); color: var(--ink-soft); max-width: 52rem; }

/* -------- Prose (legal) -------- */
.prose { max-width: 46rem; }
.prose h2 { font-family: var(--f-head); font-weight: 600; font-size: 1.3rem; text-transform: uppercase; letter-spacing: 0.04em; margin-top: 2.2rem; margin-bottom: 0.7rem; }
.prose p { font-family: var(--f-body); margin-bottom: 1rem; color: var(--ink-soft); }
.prose a { color: var(--red-dk); text-decoration: underline; text-underline-offset: 3px; }

/* -------- Colophon (footer) -------- */
.colophon { border-top: 3px solid var(--ink); background: var(--paper-2); }
.colophon-grid { display: grid; gap: 2.2rem; padding-block: 3rem; }
@media (min-width: 820px) { .colophon-grid { grid-template-columns: 2fr repeat(3, 1fr); } }
.nameplate--sm { text-align: left; font-size: 2.2rem; padding: 0; }
.colophon-brand p { font-family: var(--f-body); margin-top: 0.8rem; color: var(--ink-soft); max-width: 24rem; font-size: 0.94rem; }
.colophon-col h4 { font-family: var(--f-head); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.16em; color: var(--red); margin-bottom: 1rem; }
.colophon-col ul { list-style: none; padding: 0; margin: 0; }
.colophon-col li { margin-bottom: 0.6rem; }
.colophon-col li a { font-family: var(--f-body); font-size: 0.94rem; color: var(--ink-soft); }
.colophon-col li a:hover { color: var(--red); }
.colophon-base { display: flex; flex-direction: column; gap: 0.7rem; padding-block: 1.6rem; border-top: 1px solid var(--ink); font-family: var(--f-head); font-size: 0.8rem; letter-spacing: 0.04em; color: var(--ink-soft); }
@media (min-width: 768px) { .colophon-base { flex-direction: row; justify-content: space-between; align-items: center; } }

/* -------- Skip link -------- */
.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 1rem; top: 1rem; z-index: 100; background: var(--ink); color: var(--paper); padding: 0.6rem 1rem; }

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}